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Author: Subject: Megasquirt help
MP3C

posted on 13/10/17 at 07:44 AM Reply With Quote
Megasquirt help

Does anybody have any experience with Megasquirt ecu's and the modifications that can be done to them? I have just dug the Megasquirt ms2 V3 out of the garage after I bought it early last year. I have opened it and found the person I bought it off has made some modifications to it. I'm unable to contact the bloke I bought it from to ask him so I'm fishing for an expert or somebody who may know here

Hope you can help, I have attached pictures showing some modifications

I hope you can help so I can fix it and SWMBO will stop getting mad as it's still in the house







Thanks

Matt

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redturner
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posted on 13/10/17 at 11:19 AM Reply With Quote
Why not ring Trigger Wheels who made it , i'm sure they will help you.....
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MP3C

posted on 13/10/17 at 12:47 PM Reply With Quote
Thank you, I didn't know triggerwheels made this, I have sent them an email. Hopefully they will reply. Thanks again!

Matt

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redturner
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Building: Run 2 ltr Black Top in single seater race car.

posted on 13/10/17 at 04:19 PM Reply With Quote
Megajolt / Megasquirt asaik they make the lot.....
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MP3C

posted on 13/10/17 at 04:20 PM Reply With Quote
I have just got an email back from Chris from Triggerwheels who has suggested I deal with Phil from ExtraEFI as he doesn't deal in DIY megasquirts. Have sent an email asking if he can help me out.

Matt

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robocog

posted on 13/10/17 at 05:38 PM Reply With Quote
Red green and blue wires going from Q4 to the transistor on the plate and a removed Q20 look very much like the PWM Idle valve Mod
(see http://www.megamanual.com/ms2/IAC.htm )

I don't think there are many shortcuts other than looking at what /can/ be done and relating it to the board you have in front of you

Look at the silkscreen where the additions attach to (or components have been removed)
It will give you a good clue as to what to search for

If I had more time I would do more digging myself as I'm sure it is such a well documented project it shouldnt be that hard (but possibly time consuming due to the number of variations can be made)

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robocog

posted on 13/10/17 at 05:44 PM Reply With Quote
ms board
ms board

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robocog

posted on 13/10/17 at 05:55 PM Reply With Quote
http://www.msextra.com/doc/pdf/html/MS2V30_Hardware-3.4.pdf/MS2V30_Hardware-3.4.html

Explains the jumper wire on the MS2 card

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robocog

posted on 13/10/17 at 06:15 PM Reply With Quote
Was it setup for a V6 engine?
Wondering if they are 3x VB921's on the heatsink?

(haven't spent too much time searching - so don't shoot me down in flames for making a guess!)

Are the wires labelled where they go out of shot?

Looking at the v3 board closer (or as close I can)
Y1 - is it OK? (have circled it with WTF! next to it)
Hope its just black stuff to hold it to the board!

Also the same for C14
C13 looks iffy (or again could be black "goop" brushed against it making it look like something went wrong)

[Edited on 13/10/17 by robocog]

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MP3C

posted on 16/10/17 at 08:00 AM Reply With Quote
Thanks for the reply and help. I believe it was for a V6 engine before i purchased it. Y1 I think is o.k. i had a look and it didn't seem like it was damaged, however i might replace as there is no good reason i can think as to why it would be stuck down.

C16 had blown and I have replaced with another tantalium resistor. I will sit down with it tonight and have a play around to see if I can remove some of the mods and get it back to basic. Again thanks for the help. Ill keep you informed in what I find out/do.

Thanks,

Matt

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